US5593377A - Weir and choke plate for a solid-jacket centrifuge drum - Google Patents

Weir and choke plate for a solid-jacket centrifuge drum Download PDF

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Publication number
US5593377A
US5593377A US08/446,877 US44687795A US5593377A US 5593377 A US5593377 A US 5593377A US 44687795 A US44687795 A US 44687795A US 5593377 A US5593377 A US 5593377A
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US
United States
Prior art keywords
weir
drum
choke plate
liquid phase
channel
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US08/446,877
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English (en)
Inventor
Helmut Figgener
Paul Bruning
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GEA Mechanical Equipment GmbH
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Westfalia Separator GmbH
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Application filed by Westfalia Separator GmbH filed Critical Westfalia Separator GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2083—Configuration of liquid outlets

Definitions

  • the present invention concerns a weir for a solid-jacket centrifuge drum.
  • the weir includes at least one channel for releasing a liquid phase that has been separated out inside the drum.
  • a choke plate travels back and forth axially and is associated with the weir.
  • a weir of this type is known for example from Japanese 57-194 061 A2.
  • the weir is intended to regulate the flow of solids out of the drum to maintain a particular concentration thereof.
  • the weir rotates along with the drum and is connected at a bearing site to a stationary component that can be axially displaced.
  • the bearing site must be sealed off from the escaping liquid phase. Designs of this type are complex and likely to malfunction.
  • Another weir is known from German 4 132 029 A1. It has a spinning chamber that varies the diameter of the weir between two different values. This approach makes it possible to adjust the level of liquid at start-up to prevent the liquid from surging over to the solids side.
  • German 3 921 327 A1 proposes various ways of doing so by varying the diameter of the aperture at the weir.
  • the necessary components require transmission of the adjusting forces to rotating components, and the requisite transmission components can be sensitive to malfunction.
  • the object of the present invention is accordingly a weir that will allow continuous variation of the level of liquid in the drum without requiring the transmission of adjusting forces to rotating parts.
  • the choke plate is stationary and positioned at the channel that the clarified liquid phase travels through, so that the level of liquid inside the drum can be varied by axially displacing the plate.
  • a stationary plate is in no way detrimental to the drum's function.
  • the expected deceleration due to liquid passing through the annular gap between the rotating weir and the stationary plate does not occur.
  • the gap constitutes an impedance that increases as the axial distance between the weir and the plate decreases.
  • the pressure of the liquid at the channel must increase in order to raise the level of the liquid in the drum.
  • the level of liquid in the drum will drop until it can regulate the flow through the weir in the regular way.
  • One practical way of axially displacing the plate is with a hydraulic, pneumatic, or mechanical transmission.
  • the last mentioned can for example include a threaded sleeve.
  • the channel in another advantageous embodiment comprises several grooves extending out from the inside diameter of the weir.
  • the shape of the grooves determines the length of the edge the liquid weirs over.
  • the diameter of the outflow cross-section through which the liquid flows out of the drum is the product of the active length of the edge and distance between the weir and the plate.
  • the channel in still another advantageous embodiment comprises several round, rectangular, or square orifices in the wall of the weir.
  • FIG. 1 is a sectional view of a centrifuge according to the present invention
  • FIG. 2 is a sectional view of a detail along line II--II in FIG. 1;
  • FIG. 3 is a sectional view of a detail along line III--III in FIG. 1.
  • a centrifuge drum 1 has a weir 2 at the liquid-outlet end.
  • Weir 2 is provided with a channel 3.
  • Channel 3 comprises either several grooves 4 extending out of the inside diameter of the weir or several orifices 5 through the wall of the weir.
  • a stationary plate 6 Associated with channel 3 is a stationary plate 6 that can be axially displaced by a threaded sleeve 7.
  • the distance between weir 2 and plate 6 can be varied by rotating sleeve 7. Varying the distance varies the width of the outflow cross-section through which the liquid flows out of drum 1, which is constituted by that distance and by the overall length of the edge the liquid weirs over. Varying the width of the outflow cross-section varies the level of liquid in drum 1, allowing continuous adjustment of that level by displacing plate

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  • Centrifugal Separators (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
US08/446,877 1993-06-18 1994-04-30 Weir and choke plate for a solid-jacket centrifuge drum Expired - Lifetime US5593377A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4320265A DE4320265C2 (de) 1993-06-18 1993-06-18 Wehr für Vollmantelschleudertrommeln
DE4320265.9 1993-06-18
PCT/EP1994/001380 WO1995000249A1 (de) 1993-06-18 1994-04-30 Wehr für vollmantelschleudertrommeln

Publications (1)

Publication Number Publication Date
US5593377A true US5593377A (en) 1997-01-14

Family

ID=6490654

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/446,877 Expired - Lifetime US5593377A (en) 1993-06-18 1994-04-30 Weir and choke plate for a solid-jacket centrifuge drum

Country Status (8)

Country Link
US (1) US5593377A (ja)
EP (1) EP0702599B1 (ja)
JP (1) JP2779067B2 (ja)
AT (1) ATE146103T1 (ja)
DE (2) DE4320265C2 (ja)
DK (1) DK0702599T3 (ja)
ES (1) ES2097650T3 (ja)
WO (1) WO1995000249A1 (ja)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040058796A1 (en) * 2000-05-05 2004-03-25 Bernward Feldkamp Solid bowl centrifuge for separating mixtures of liquids and solids
US20050143245A1 (en) * 2002-05-08 2005-06-30 Werner Kohlstette Centrifuge especially a separator
US20050164861A1 (en) * 2002-01-30 2005-07-28 Paul Bruning Full-jacket helix centrifuge with a weir
US20050227848A1 (en) * 2002-05-29 2005-10-13 Wilhelm Ostkamp Solid bowl screw centrifuge comprising a peeling disk, and method for the operation thereof
WO2005097336A1 (de) 2004-04-06 2005-10-20 Westfalia Separator Ag Vollmantelzentrifuge mit einem wehr und diesem zugeordneter stationärer ablenskscheibe
EP1588769A1 (de) * 2004-04-21 2005-10-26 Flottweg GmbH & Co. KGaA Wehreinrichtung für eine Zentrifuge
US20080153687A1 (en) * 2003-08-08 2008-06-26 Michael Reichenbach Solid Bowl Screw Centrifuge Comprising a Centripetal Pump
US20090298666A1 (en) * 2006-05-11 2009-12-03 Westfalia Separator Ag Three Phase Separator
US20100035742A1 (en) * 2006-03-30 2010-02-11 Westfalia Separator Ag Fully jacketed screw centrifuge with efflux orifices for partial and residual emptying of the drum
US20100105536A1 (en) * 2005-06-14 2010-04-29 Wolf-Diethard Sudhues Three-phase solid bowl screw centrifuge and method of controlling the separating process
US20110003677A1 (en) * 2009-07-02 2011-01-06 Andritz S.A.S. Weir and choke plate for solid bowl centrifuge
US20150018190A1 (en) * 2012-03-22 2015-01-15 Hiller Gmbh Solid bowl screw-type centrifuge
US9089852B2 (en) 2011-12-22 2015-07-28 Gea Mechanical Equipment Gmbh Fully jacketed screw centrifuge with a hose segment arranged in the solids capture chamber
US9579665B2 (en) 2010-11-12 2017-02-28 Alfa Laval Corporate Ab Centrifugal separator and an outlet element for a centrifugal separator
US20180117601A1 (en) * 2015-04-24 2018-05-03 Alfa Laval Corporate Ab Centrifugal separator and thereto related methods
CN116832973A (zh) * 2023-06-08 2023-10-03 建湖金拓机械制造有限公司 一种智能控制自动清除有害固相的钻井液离心机

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19962645C2 (de) * 1999-12-23 2003-04-30 Flottweg Gmbh Wehreinrichtung für eine Zentrifuge
DE50108585D1 (de) 2000-11-14 2006-02-02 Westfalia Separator Ag Vollmantel-schneckenzentrifuge mit verteiler
DE10065060B4 (de) * 2000-12-27 2004-07-08 Westfalia Separator Ag Vollmantel-Schneckenzentrifuge mit Tellereinsatz
DE10103769C2 (de) 2001-01-27 2003-07-31 Westfalia Separator Food Tec G Zentrifuge
DK1232794T3 (da) 2001-02-08 2004-10-25 Westfalia Separator Ag Fremgangsmåde til adskillelse af en flerfaseblanding og et dekanteringscentrifugesystem til udövelse af fremgangsmåden
DE10209925B4 (de) * 2002-03-07 2010-06-17 Gea Westfalia Separator Gmbh Dreiphasen-Vollmantel-Schneckenzentrifuge, Vollmantel-Schneckenzentrifuge und Verfahren zum Betreiben einer Dreiphasen-Vollmantel-Schneckenzentrifuge
DE102004029394A1 (de) 2004-06-17 2006-01-19 Westfalia Separator Ag Spalierobst, insbesondere Beeren- oder Traubenerntefahrzeug und -verfahren
RU2324814C2 (ru) * 2006-01-10 2008-05-20 Общество с ограниченной ответственностью Научно-производственное предприятие "НКГЕО" Способ и устройство регулировки режима работы генератора питания телеметрической системы
DE102006006178A1 (de) 2006-02-10 2007-08-16 Westfalia Separator Ag Vollmantel-Schneckenzentrifuge und Verfahren zu deren Betrieb
EP3628407B1 (de) * 2018-09-28 2021-07-28 Siebtechnik GmbH Zentrifuge mit beschichteten wehrplatten
DE102023106308A1 (de) 2023-03-14 2024-09-19 Gea Westfalia Separator Group Gmbh Vollmantel-Schneckenzentrifuge und Verfahren zur Steuerung oder Regelung eines Trennprozesses mit der Vollmantel-Schneckenzentrifuge

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580492A (en) * 1967-08-23 1971-05-25 Alfa Laval Ab Trifugal separator with adjustable outlet means
JPS57194061A (en) * 1981-05-26 1982-11-29 Kobe Steel Ltd Centrifugal concentrating device
US4575370A (en) * 1984-11-15 1986-03-11 Pennwalt Corporation Centrifuge employing variable height discharge weir
US4764163A (en) * 1986-07-03 1988-08-16 Pennwalt Corporation Decanter plate dam assembly with pond adjustment
US4950219A (en) * 1988-10-20 1990-08-21 Alfa-Laval Ab Adjustable weir structure for a decanter centrifuge
EP0391043A2 (de) * 1989-04-07 1990-10-10 Klöckner-Humboldt-Deutz Aktiengesellschaft Zentrifuge zum kontinuierlichen Trennen von Stoffen unterschiedlicher Dichte
DE3921327A1 (de) * 1989-06-29 1991-01-03 Kloeckner Humboldt Deutz Ag Wehr zum einstellen des fluessigkeitsstandes in vollmantelzentrifugen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4132029A1 (de) * 1991-09-26 1993-04-01 Westfalia Separator Ag Wehrscheibe zum einstellen des fluessigkeitsstandes in vollmantelschleudertrommeln von schneckenzentrifugen

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580492A (en) * 1967-08-23 1971-05-25 Alfa Laval Ab Trifugal separator with adjustable outlet means
JPS57194061A (en) * 1981-05-26 1982-11-29 Kobe Steel Ltd Centrifugal concentrating device
US4575370A (en) * 1984-11-15 1986-03-11 Pennwalt Corporation Centrifuge employing variable height discharge weir
US4764163A (en) * 1986-07-03 1988-08-16 Pennwalt Corporation Decanter plate dam assembly with pond adjustment
US4950219A (en) * 1988-10-20 1990-08-21 Alfa-Laval Ab Adjustable weir structure for a decanter centrifuge
EP0391043A2 (de) * 1989-04-07 1990-10-10 Klöckner-Humboldt-Deutz Aktiengesellschaft Zentrifuge zum kontinuierlichen Trennen von Stoffen unterschiedlicher Dichte
US5169377A (en) * 1989-04-07 1992-12-08 Kloeckner-Humboldt-Deutz Aktiengesellschaft Centrifuge for the continuous separation of substances that differ in density
DE3921327A1 (de) * 1989-06-29 1991-01-03 Kloeckner Humboldt Deutz Ag Wehr zum einstellen des fluessigkeitsstandes in vollmantelzentrifugen
US5217428A (en) * 1989-06-29 1993-06-08 Kloeckner-Humboldt-Deutz Aktiengesellschaft Weir for setting the liquid level in solid bowl centrifuges

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040058796A1 (en) * 2000-05-05 2004-03-25 Bernward Feldkamp Solid bowl centrifuge for separating mixtures of liquids and solids
US20050164861A1 (en) * 2002-01-30 2005-07-28 Paul Bruning Full-jacket helix centrifuge with a weir
US7326169B2 (en) * 2002-01-30 2008-02-05 Westfalia Separator Ag Full-jacket helix centrifuge with a weir
US7074173B2 (en) 2002-05-08 2006-07-11 Westfalia Separator Ag Centrifuge having a centrifugal drum and a groove including a seal
US20050143245A1 (en) * 2002-05-08 2005-06-30 Werner Kohlstette Centrifuge especially a separator
US7056273B2 (en) 2002-05-29 2006-06-06 Westfalia Separator Ag Solid bowl screw centrifuge comprising a peeling disk, and method for the operation thereof
US20050227848A1 (en) * 2002-05-29 2005-10-13 Wilhelm Ostkamp Solid bowl screw centrifuge comprising a peeling disk, and method for the operation thereof
US20080153687A1 (en) * 2003-08-08 2008-06-26 Michael Reichenbach Solid Bowl Screw Centrifuge Comprising a Centripetal Pump
US7510519B2 (en) * 2003-08-08 2009-03-31 Westfalia Separator Ag Solid bowl screw centrifuge comprising a centripetal pump with a throtting device
US7753834B2 (en) * 2004-04-06 2010-07-13 Westfalia Separtator AG Solid-wall centrifuge comprising a weir provided with a stationary angled deflector plate
WO2005097336A1 (de) 2004-04-06 2005-10-20 Westfalia Separator Ag Vollmantelzentrifuge mit einem wehr und diesem zugeordneter stationärer ablenskscheibe
US20080248940A1 (en) * 2004-04-06 2008-10-09 Helmut Figgener Solid-Wall Centrifuge Comprising a Weir Provided With a Stationary Deflector Plate
EP1588769A1 (de) * 2004-04-21 2005-10-26 Flottweg GmbH & Co. KGaA Wehreinrichtung für eine Zentrifuge
US8523749B2 (en) 2005-06-14 2013-09-03 Gea Mechanical Equipment Gmbh Three-phase solid bowl screw centrifuge and method of controlling the separating process
US20100105536A1 (en) * 2005-06-14 2010-04-29 Wolf-Diethard Sudhues Three-phase solid bowl screw centrifuge and method of controlling the separating process
US8465405B2 (en) * 2006-03-30 2013-06-18 Gea Mechanical Equipment Gmbh Solid-bowl screw centrifuge with outlet openings for partial and residual emptying of the drum
US20100035742A1 (en) * 2006-03-30 2010-02-11 Westfalia Separator Ag Fully jacketed screw centrifuge with efflux orifices for partial and residual emptying of the drum
US8192342B2 (en) 2006-05-11 2012-06-05 Westfalia Separator Ag Separator having a liquid outlet including a throttling device
US20090298666A1 (en) * 2006-05-11 2009-12-03 Westfalia Separator Ag Three Phase Separator
US20110003677A1 (en) * 2009-07-02 2011-01-06 Andritz S.A.S. Weir and choke plate for solid bowl centrifuge
US8579783B2 (en) * 2009-07-02 2013-11-12 Andritz S.A.S. Weir and choke plate for solid bowl centrifuge
US9579665B2 (en) 2010-11-12 2017-02-28 Alfa Laval Corporate Ab Centrifugal separator and an outlet element for a centrifugal separator
US9089852B2 (en) 2011-12-22 2015-07-28 Gea Mechanical Equipment Gmbh Fully jacketed screw centrifuge with a hose segment arranged in the solids capture chamber
US20150018190A1 (en) * 2012-03-22 2015-01-15 Hiller Gmbh Solid bowl screw-type centrifuge
US20180117601A1 (en) * 2015-04-24 2018-05-03 Alfa Laval Corporate Ab Centrifugal separator and thereto related methods
US11052409B2 (en) * 2015-04-24 2021-07-06 Alfa Laval Corporate Ab Centrifugal separator and method of monitoring an e-line position in a centrifugal separator
CN116832973A (zh) * 2023-06-08 2023-10-03 建湖金拓机械制造有限公司 一种智能控制自动清除有害固相的钻井液离心机

Also Published As

Publication number Publication date
JPH08506522A (ja) 1996-07-16
DK0702599T3 (da) 1997-06-02
DE4320265C2 (de) 1995-08-03
WO1995000249A1 (de) 1995-01-05
DE59401277D1 (de) 1997-01-23
JP2779067B2 (ja) 1998-07-23
ATE146103T1 (de) 1996-12-15
EP0702599B1 (de) 1996-12-11
ES2097650T3 (es) 1997-04-01
EP0702599A1 (de) 1996-03-27
DE4320265A1 (de) 1994-12-22

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